Exodus 12:5-13

The lamb must be a one-year-old male that has nothing wrong with it. This animal can be either a young sheep or a young goat. Take care of the animals until the fourteenth day of the month. On that day all the people of the community of Israel will kill them in the evening before dark. The people must take some of the blood and put it on the sides and tops of the doorframes of the houses where they eat the lambs. On this night they must roast the lamb over a fire. They must eat it with bitter herbs and bread made without yeast. Do not eat the lamb raw or boiled in water. Roast the whole lamb over a fire—with its head, legs, and inner organs. You must not leave any of it until morning, but if any of it is left over until morning, you must burn it with fire. “This is the way you must eat it: You must be fully dressed as if you were going on a trip. You must have your sandals on and your walking stick in your hand. You must eat it in a hurry; this is the LORD’s Passover. “That night I will go through the land of Egypt and kill all the firstborn animals and people in the land of Egypt. I will also punish all the gods of Egypt. I am the LORD. But the blood will be a sign on the houses where you are. When I see the blood, I will pass over you. Nothing terrible will hurt you when I punish the land of Egypt.